The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 10, 2026
Filed:
Jan. 03, 2025
Saudi Arabian Oil Company, Dhahran, SA;
King Fahd University of Petroleum and Minerals, Dhahran, SA;
Fahad Khan, Dhahran, SA;
Mohamed Ahmed Nasr Aldeen Mahmoud, Dhahran, SA;
Arshad Raza, Dhahran, SA;
Murtadha J. Altammar, Dhahran, SA;
Shirish Patil, Dhahran, SA;
Saudi Arabian Oil Company, Dhahran, SA;
King Fahd University of Petroleum and Minerals, Thuwal, SA;
Abstract
A crosslinked endothermic fluid composition may comprise an aqueous solution; ammonium chloride; a polymer; and a crosslinker. A method of thermally shocking a subsurface formation may comprise introducing the crosslinked endothermic fluid composition into a wellbore fluidly connected to the subsurface formation; exposing the crosslinked endothermic fluid composition to the subsurface formation, such that a temperature of the subsurface formation at least partially breaks a crosslink of the crosslinked endothermic fluid composition and exposes at least a portion of the ammonium chloride; reacting the ammonium chloride in the crosslinked endothermic fluid composition with fluids of the subsurface formation, thereby decreasing a temperature of the subsurface formation and producing ammonia; and thermally shocking the subsurface formation via the decreased temperature and produced ammonia, thereby inducing one or more fractures in the subsurface formation.